https://www.everydayhealth.com/fitness/can-running-backwards-really-better-burn-calories-work-your-heart-and-build-muscle/?slot=1&eh_uid=87202027&xid=nl_EHNLmen_2022-12-12_29954641&utm_source=Newsletters&nl_key=nl_mens_health&utm_content=2022-12-12&utm_campaign=Mens_Health&zdee=gAAAAABikEv0rELRchH1_bXirg-iNzzj1JF22G-2mhWrmyEn2a4AQ1m899i9nj5HvfKM2-WZhwQNIf0qn_e1MQKc4Bs-TXGnjV2jfzsSEgzqUchBhbipw70%3D

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